I tried it a while back. Most of the real exoplanets have already been discovered...

"Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist, but that's just peanuts to space." - Douglas Adams

It is also unlikely you will able to detect "potentially habitable" planets (terrestrial sized) with this method -- the transit depths are too small and will be lost in the noise. You can get decent photometry of transiting gas giants, though.

Added: You can also use a simple camera for observing eclipsing binaries, and get scientifically useful information from it.

You know what, CCP's MMORPG space sim game Eve Online has a Project Discovery, in which players could help analyse data from CoRoT satellite and look for transit signals. It's a cooperation between CCP and Geneva University, and it's lead by Michel Mayor (co-discoverer of 51 Pegasi b, the first discovered exoplanet around main sequence stars).

My only complaint about that EVE program is that they should have made it more obvious that it's real science. When I started doing the Project Discovery, I thought "So, I guess this is supposed to be for discovering planets around stars in EVE."